Home / 1,948.25-2,688.47-1,109.15

Finding the Fourth Proportional to 1,948.25, 2,688.47 and 1,109.15

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Solution

The fourth proportional to 1,948.25, 2,688.47 and 1,109.15 is: 1,530.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.25 : 2,688.47 = 1,109.15 : x
  2. Step 2: Convert to fraction form
    1,948.25/2,688.47 = 1,109.15/x
  3. Step 3: Cross multiply
    1,948.25x = 2,688.47 × 1,109.15
  4. Step 4: Simplify right side
    1,948.25x = 2,981,921.84
  5. Step 5: Solve for x
    x = 2,981,921.84/1,948.25
  6. Step 6: Final answer
    x = 1,530.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.